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English definition of “crystal”


noun     /ˈkrɪstəl/
ROCK [C, U] a type of transparent rock Precious and semi-precious stonesTypes of rock
GLASS [U] a type of high quality glass : a crystal vase Glass
SHAPE [C] a piece of a substance that has become solid , with a regular shape : ice crystalsGeometrical shapesSpherical, circular and annular objects
(Definition of crystal noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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